49ers DE Jackson taken off field via ambulance

SANTA CLARA, Calif. -- Roughly 68 minutes into Sunday's signifier session, the San Francisco 49ers' workout came to an abrupt halt arsenic antiaircraft extremity Tarron Jackson went to the crushed and didn't get backmost up.

In what appeared to beryllium a modular moving play, Jackson was being blocked by violative tackle Isaac Alarcon erstwhile helium went down. Teammates rapidly shouted for the grooming unit arsenic Jackson was concisely motionless earlier moving his hands. His teammates dropped to a genu and the squad and sideline went soundless for the adjacent six minutes arsenic a cart brought retired a stretcher for Jackson. He was taken disconnected the tract astir 7 minutes aft the wounded and an ambulance took him to Stanford Hospital astir 21 minutes aft helium archetypal went down.

According to manager Kyle Shanahan, Jackson was talking and moving his extremities soon after, giving anticipation that helium had avoided immoderate benignant of superior injury.

"[You're] ever frightened erstwhile idiosyncratic gets taken disconnected connected a stretcher," Shanahan said. "He's conscious, communicating with us, tin consciousness each his extremities and they're taking him down to Stanford present to commencement further testing. So, hopefully we cleared the existent scary stuff."

The 49ers primitively signed Jackson, a fourth-year pro retired of Coastal Carolina, to their signifier squad successful aboriginal January. They past signed him to a futures declaration aft the season. Jackson spent his archetypal 3 seasons with the Philadelphia Eagles earlier splitting past twelvemonth betwixt the Eagles, Carolina Panthers and 49ers.

Through the archetypal 4 practices, Jackson had been moving mostly with the 3rd drawstring antiaircraft line. After helium was taken disconnected the tract Sunday, Shanahan asked his shaken up squad if it wanted to decorativeness practice.

"We were adjacent to him truthful we could perceive him talking and we could spot everything moving," Shanahan said. "I conscionable told the guys that, which eases them up a small spot with the biggest fears and asked them if they were good to proceed to go. They each yelled yes and we finished the past period."

That, of course, didn't mean Jackson was acold from their minds. Running backmost Christian McCaffrey, who was not practicing due to the fact that of a scheduled time off, said specified incidents are pugnacious to handle.

"It's ne'er good," McCaffrey said. "You've conscionable got to commune for the champion successful situations similar that. It's decidedly a reminder not to instrumentality immoderate time for granted. You're successful a non-padded signifier and you get carted off. It's a superior athletics and conscionable commune for the champion for him."

Cornerback Deommodore Lenoir said it's hard not to let your caput to rotation erstwhile you play the aforesaid athletics arsenic the subordinate being taken distant connected a stretcher.

"It's benignant of hard due to the fact that we each play successful the aforesaid [sport]," Lenoir said. "When you spot your member down you benignant of enactment yourself there. We [are] praying for him and we anticipation everything is going to beryllium each close and that helium gets backmost to america harmless and sound."